Book Image

Microsoft Azure Fundamentals Certification and Beyond

By : Steve Miles
Book Image

Microsoft Azure Fundamentals Certification and Beyond

By: Steve Miles

Overview of this book

This is the digital and cloud era, and Microsoft Azure is one of the top cloud computing platforms. It’s now more important than ever to understand how the cloud functions and the different services that can be leveraged across the cloud. This book will give you a solid understanding of cloud concepts and Microsoft Azure, starting by taking you through cloud concepts in depth, then focusing on the core Azure architectural components, solutions, and management tools. Next, you will understand security concepts, defense-in-depth, and key security services such as Network Security Groups and Azure Firewall, as well as security operations tooling such as Azure Security Center and Azure Sentinel. As you progress, you will understand how identity, governance, privacy, and compliance are managed in Azure. Finally, you will get to grips with cost management, service-level agreements, and service life cycles. Throughout, the book features a number of hands-on exercises to support the concepts, services, and solutions discussed. This provides you with a glimpse of real-world scenarios, before finally concluding with practice questions for AZ-900 exam preparation. By the end of this Azure book, you will have a thorough understanding of cloud concepts and Azure fundamentals, enabling you to pass the AZ-900 certification exam easily.
Table of Contents (21 chapters)
1
Section 1: Cloud Concepts
4
Section 2: Core Azure Services
7
Section 3: Core Solutions and Management Tools
10
Section 4: Security
12
Section 5: Identity, Governance, Privacy, and Compliance
16
Section 6: Cost Management and Service-Level Agreements

Thought exercise

Returning to our digital company, MilesBetter Pizza, they have encountered some service availability issues over the last few months. They have noticed that their services have different SLAs, and they need to ensure that, in total, they always meet a target total of 99.9%. However, they are unsure how to calculate and achieve this.

First, the team at MilesBetter needs to understand the concept of a composite SLA; as we learned earlier in this chapter, this means that when you combine services, the overall SLA is lower than the individual highest SLA on one of the services. This is because each service that you add increases the probability of failure and increases complexity. The following example illustrates how a composite SLA is calculated across the services:

  • Service 1 = 99.9%
  • Service 2 = 99.95%
  • Service 3 = 99.99%
  • Service 4 = 99.99%

The calculation looks as follows, which shows that the target SLA will not be met:

0.999 x 0.9995...